63389273556 has 288 divisors, whose sum is σ = 189330849792. Its totient is φ = 16403143680.

The previous prime is 63389273543. The next prime is 63389273557. The reversal of 63389273556 is 65537298336.

63389273556 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 63389273496 and 63389273505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63389273557) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 19702860 + ... + 19706076.

It is an arithmetic number, because the mean of its divisors is an integer number (657398784).

Almost surely, 2^63389273556 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63389273556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94665424896).

63389273556 is an abundant number, since it is smaller than the sum of its proper divisors (125941576236).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63389273556 is a wasteful number, since it uses less digits than its factorization.

63389273556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3339 (or 3330 counting only the distinct ones).

The product of its digits is 24494400, while the sum is 57.

The spelling of 63389273556 in words is "sixty-three billion, three hundred eighty-nine million, two hundred seventy-three thousand, five hundred fifty-six".